Home / 7,081.37-10,620.54-2,920.30

Finding the Fourth Proportional to 7,081.37, 10,620.54 and 2,920.30

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Solution

The fourth proportional to 7,081.37, 10,620.54 and 2,920.30 is: 4,379.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.37 : 10,620.54 = 2,920.30 : x
  2. Step 2: Convert to fraction form
    7,081.37/10,620.54 = 2,920.30/x
  3. Step 3: Cross multiply
    7,081.37x = 10,620.54 × 2,920.30
  4. Step 4: Simplify right side
    7,081.37x = 31,015,204.36
  5. Step 5: Solve for x
    x = 31,015,204.36/7,081.37
  6. Step 6: Final answer
    x = 4,379.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.